To add or delete a user in Summit, navigate to System Management > User Management. This will open up the User Management window.
Note: Your system management menu might look different, but the process is the same.From the User Management window, you can create and delete users as well as modify information for existing users.
To delete a user, simply click on the user you want to delete and click the red delete button at the bottom of the screen. This will cause a confirmation popup to appear. Click delete again and the user will be deleted.
Note: Once you click delete on the confirmation window, it cannot be undone. Make sure you are certain you are deleting the correct user before confirming.
There are two ways to create a new user, either completely from scratch or as a modified version of an existing user.
To create a user from scratch, highlight New User and fill in all of the information for the user, including what user group(s) you want them to be able to access, and then press the green save button.
To create a new user as a modified version of an existing user, first select the user you want to use as a template. Next, change any information to match the new user and then press the green "Save As New" button.
Note: User groups determine what parts of the Summit application users can access. If a user is unable to perform a function because of their privilege level, the option will be greyed out and a popup will show the missing privilege required to perform the action. Adjusting the user groups assigned to the user will fix this issue. 
The final option in the user management window is to update a user's information. For example, if you wanted to allow the user access to additional features of Summit, you can choose another user group from the dropdown menu and then press the yellow update button.
That's it! You can now add, delete, and modify users in User Management.